kerry warned the iraqis to stop allowing iran to use air space for flights into syria. the u.s. believes the flights are carrying weapons. for the syrian regime. kerry visits afghanistan today. >>> and the mysterious death of a billionaire russian businessman is raising questions about whether moscow has pulled off a cold war-style poisoning plot. an out spoken critic boris berezovsky was found dead at his apartment. at the scene, a radiation detector went off. >>> a possible motive in the killing of colorado prison official tom clements. he was shot in his home last tuesday. it may have been revenge for breaking up a white supremacist prison gang. they say suspect evan ebel was a member of that gang and spent years in solitary confinement. >>> thousands of people forced to evacuate their homes after a fast moving brush fire ran out of control in ft. pierce, florida. it was whipped up by heavy winds. a few homes were damaged. thankfully, no injuries reported. >>> take a look at this dramatic video this morning from 5,200 feet up. rescue crews called in to bring a severely injure